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Method for producing a crimped yarn
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Patent number 4,000,605
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Issue date Jan 4, 1977
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Mitsubishi Rayon Co., Ltd.
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Kazuya Chimura
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D02 - YARNS MECHANICAL FINISHING OF YARNS OR ROPES WARPING OR BEAMING
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Light transmitting filament
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Patent number 3,993,834
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Issue date Nov 23, 1976
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Mitsubishi Rayon Co., Ltd.
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Kazuya Chimura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Unitary spun composite filament
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Patent number 3,940,543
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Issue date Feb 24, 1976
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Mitsubishi Rayon Co., Ltd.
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Kazuya Chimura
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING